EP1004768B1 - Heating device for the interior of a vehicle - Google Patents

Heating device for the interior of a vehicle Download PDF

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Publication number
EP1004768B1
EP1004768B1 EP99122012A EP99122012A EP1004768B1 EP 1004768 B1 EP1004768 B1 EP 1004768B1 EP 99122012 A EP99122012 A EP 99122012A EP 99122012 A EP99122012 A EP 99122012A EP 1004768 B1 EP1004768 B1 EP 1004768B1
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EP
European Patent Office
Prior art keywords
heating
vehicle
power requirement
internal combustion
heating power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99122012A
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German (de)
French (fr)
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EP1004768A3 (en
EP1004768A2 (en
Inventor
Marco Heddram
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
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Volkswagen AG
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Filing date
Publication date
Priority claimed from DE19854119A external-priority patent/DE19854119A1/en
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP1004768A2 publication Critical patent/EP1004768A2/en
Publication of EP1004768A3 publication Critical patent/EP1004768A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • B60H1/08—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/00764—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a vehicle driving condition, e.g. speed
    • B60H1/00778—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a vehicle driving condition, e.g. speed the input being a stationary vehicle position, e.g. parking or stopping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/03—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant
    • B60H1/034—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from the cooling liquid of the propulsion plant and from an electric heating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
    • F02N11/0833—Vehicle conditions
    • F02N11/084—State of vehicle accessories, e.g. air condition or power steering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/08—Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
    • F02N2200/0811—Heating state
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2300/00—Control related aspects of engine starting
    • F02N2300/30—Control related aspects of engine starting characterised by the use of digital means
    • F02N2300/302—Control related aspects of engine starting characterised by the use of digital means using data communication
    • F02N2300/304—Control related aspects of engine starting characterised by the use of digital means using data communication with other systems inside the vehicle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the invention relates to a heating system for the interior of a vehicle with the in the preamble of claim 1 mentioned features.
  • Heating systems of the generic type are known.
  • a coolant usually water
  • the coolant is via one of the Internal combustion engine drivable mechanical conveyor circulated and over led a cooler so that cooling of the engine can be done.
  • a Branch off heating circuit via a heating device, in particular a Heat exchanger is performed.
  • a heating air can be heated be through a ducting machine through a duct system in the Vehicle interior is feasible. According to a heating power requirement by a driver or an automatic temperature control takes place varying degrees of heating of the air flow through the heat exchanger.
  • the invention is based on the object, a heating system of the generic type Art to create, in a simple way without additional components one continuous heating of an interior of the vehicle is possible.
  • the electric Zuterrorismsystem is advantageous at a low Minimum heating power demand (in particular ⁇ 50%) switched on and in particular in Dependence of the cooling water temperature (no connection at high Cooling water temperature).
  • the figure shows a block diagram of a total of 10 designated heating system of a vehicle.
  • the heating system 10 includes a heater 12 through which a Channel system 14 leads to the transport of air.
  • the channel system 14 has at its downstream end 16 at least one - not shown - air inlet to Supplying fresh air 18 and at its upstream end 20 at least one Air outlet, which opens into an interior of a vehicle.
  • the channel system 14 is Branched executed and usually flows in a variety of air outlets, for example, in an instrument panel, in the footwell, in the door area or the like of the vehicle.
  • the fresh air 18 is either outside air, from outside the Vehicle, or as indoor air, from an interior of the vehicle (recirculation mode), sucked.
  • To maintain an air flow is in the channel system 14 a here not shown turbomachine integrated.
  • the cooling circuit 26 is coupled to a heating circuit 34. This leads a lead 36 to a heat exchanger 38, from which a return line 40 leads to the cooling circuit 26.
  • a heating circuit 34 By the coupling of the heating circuit 34 with the cooling circuit 26 circulates through it also the coolant with a corresponding coolant temperature.
  • the heating circuit 34 In the figure 1 is the heating circuit 34 connected in parallel to the cooling circuit 26. After another, not illustrated embodiments, the heating circuit 34 and the cooling circuit 26 also be connected in series.
  • the vehicle further comprises an engine control unit 54, which via a here indicated Control line 56 is connected to the internal combustion engine 24.
  • an Transmission control unit 58 is provided that the control of a not shown Automatic transmission of the vehicle is used. All control units of the vehicle, of which in Figure 1, the heater control unit 48, the engine control unit 54 and the Transmission control unit 58 are shown connected to a vehicle bus 60.
  • Vehicle bus 60 is, for example, a CAN bus. Structure and function of such Vehicle buses are well known and are intended in the context of the present Description will not be explained in detail.
  • the vehicle bus 60 is for replacement of commands and / or information between passive and active components inside the vehicle.
  • the heating system 10 shown in the figure has the following function:
  • the opening degree of the temperature mixing door 42 is dependent on a heating power requirement for the interior of the vehicle.
  • the heating power requirement can be triggered by an automatic temperature control for the interior of the vehicle and / or a driver.
  • the temperature mixing flap 42 is opened or closed via the actuator 44, so that a free flow cross section of the channel system 14 is varied such that the proportion of guided through the heat exchanger 38 fresh air 18 increases with higher heating power requirement or decreases with decreasing heating power requirement.
  • the control of the actuator 44 is carried out according to the position of the actuating means 50 of the heater control unit 48th
  • the transmission control unit 58 or the engine control unit 54 the information about the degree of Heating requirement received directly from the heating control unit 48. This can be done in Be vehicles that either have no vehicle bus 60, or the case Heating power requirement for no further connected to the vehicle bus 60 Component of interest.

Abstract

A heating installation for the cabin of a vehicle that can be driven via a liquid-cooled internal combustion engine operable in an automatic start/stop mode, has a delivery device for a coolant that can be driven mechanically by the engine. The coolant circuit is connected with a heating circuit. In the heating circuit is located a heating apparatus that outputs a heat energy to an airflow according to a heating power demand. The airflow is conducted via a channel system to at least one outlet in the cabin of the vehicle. The automatic start/stop mode of the engine (24) can be switched off according to the heating power demand. The switching off of the automatic start/stop mode of the engine takes place from a given minimum heating power demand onwards.

Description

Die Erfindung betrifft eine Heizungsanlage für den Innenraum eines Fahrzeuges mit den im Oberbegriff des Anspruchs 1 genannten Merkmalen.The invention relates to a heating system for the interior of a vehicle with the in the preamble of claim 1 mentioned features.

Heizungsanlagen der gattungsgemäßen Art sind bekannt. Hierbei ist eine flüssigkeitsgekühlte Brennkraftmaschine in einen Kühlkreislauf eingebunden, innerhalb dem ein Kühlmittel, in der Regel Wasser, zirkuliert. Das Kühlmittel wird über eine von der Brennkraftmaschine antreibbare mechanische Fördereinrichtung umgewälzt und über einen Kühler geführt, so daß eine Kühlung der Brennkraftmaschine erfolgen kann. Es ist bekannt, zur Heizung des Innenraumes des Fahrzeuges von dem Kühlkreislauf einen Heizkreislauf abzuzweigen, der über eine Heizeinrichtung, insbesondere einen Wärmetauscher, geführt wird. Mittels des Wärmetauschers kann eine Heizluft erwärmt werden, die durch eine Strömungsmaschine über ein Kanalsystem in den Fahrzeuginnenraum führbar ist. Entsprechend einer Heizleistungsanforderung durch einen Fahrzeugführer oder eine automatische Temperaturregelung erfolgt eine unterschiedlich starke Erwärmung des Luftstromes durch den Wärmetauscher.Heating systems of the generic type are known. Here is one Liquid-cooled internal combustion engine integrated into a cooling circuit, within a coolant, usually water, circulates. The coolant is via one of the Internal combustion engine drivable mechanical conveyor circulated and over led a cooler so that cooling of the engine can be done. It is known, for heating the interior of the vehicle from the cooling circuit a Branch off heating circuit, via a heating device, in particular a Heat exchanger is performed. By means of the heat exchanger, a heating air can be heated be through a ducting machine through a duct system in the Vehicle interior is feasible. According to a heating power requirement by a driver or an automatic temperature control takes place varying degrees of heating of the air flow through the heat exchanger.

Es ist femer bekannt, Fahrzeuge in einem sogenannten Start/Stop-Modus zu betreiben, bei dem die Brennkraftmaschine bei einem verkehrsbedingten Halten, beispielsweise einem Ampelstop oder dergleichen, automatisch abgeschaltet wird und nach einer Lastanforderung durch den Fahrzeugführer automatisch wieder startet. Da die mechanische Fördereinrichtung zum Umwälzen des Kühlkreislaufes bei abgeschalteter Brennkraftmaschine ebenfalls steht, ist hierbei nachteilig, daß mit dem Kühlkreislauf auch der mit dem Kühlkreislauf gekoppelte Heizkreislauf nicht mehr umgewälzt wird. Somit wird die Heizeinrichtung nicht vom erwärmten Kühlmittel durchströmt. Hierdurch ist bei Vorliegen einer Heizleistungsanforderung mit einem Absinken einer Ausblastemperatur des erwärmten Luftstromes in den Fahrzeuginnenraum zu rechnen. Insbesondere, wenn Außentemperaturen sich in einem relativ niederen Bereich, beispielsweise unterhalb des Gefrierpunktes, befinden, ist beim Stop der Brennkraftmaschine mit einem relativ raschen Abkühlen des Kühlmittels im Heizkreislauf zu rechnen, so daß es zu relativ großen Absenkungen der Ausblastemperatur der Heizluft kommen kann. It is also known to operate vehicles in a so-called start / stop mode, in which the internal combustion engine in a traffic-related holding, for example a traffic light stop or the like, is automatically turned off and after a Load request by the driver automatically restarts. Because the mechanical conveyor for circulating the cooling circuit when switched off Internal combustion engine is also, it is disadvantageous that with the cooling circuit also the coupled with the cooling circuit heating circuit is no longer circulated. Consequently the heater is not flowed through by the heated coolant. This is at There is a heating requirement with a drop in blow-off temperature to expect the heated air flow in the vehicle interior. In particular, if Outside temperatures are in a relatively low range, for example below the Freezing point, is at the stop of the internal combustion engine with a relative rapid cooling of the coolant in the heating circuit to be expected, so that it is too relative large reductions in the outlet temperature of the heating air can come.

Es ist bereits vorgeschlagen, um dieses Problem zu beheben, die durch die Brennkraftmaschine mechanisch angetriebene Fördereinrichtung durch eine elektrisch betriebene Fördereinrichtung zu ersetzen beziehungsweise zu ergänzen, so daß auch bei abgeschalteter Brennkraftmaschine ein Kühlkreislauf für die Brennkraftmaschine und somit ein Heizkreislauf aufrechterhalten werden kann. Hierbei ist jedoch nachteilig, daß ein relativ großer Bauaufwand zu betreiben ist und ein zusätzlicher elektrischer Verbraucher in dem Fahrzeug anzuordnen ist.It is already suggested to fix this problem by the Internal combustion engine mechanically driven conveyor by an electric operated conveyor to replace or supplement, so that too when the engine is switched off, a cooling circuit for the internal combustion engine and Thus, a heating circuit can be maintained. However, it is disadvantageous that a relatively large construction cost is to operate and an additional electrical Consumer is to be arranged in the vehicle.

Insbesondere ist nachteilig, daß eine elektrisch angetriebene Pumpe aufgrund ihres Strömungswiderstandes auch dann mitlaufen muß, wenn der Kühlkreislauf über eine mechanische Fördereinrichtung während des Betriebes der Brennkraftmaschine umgewälzt wird.In particular, it is disadvantageous that an electrically driven pump due to their Flow resistance must also run when the cooling circuit via a mechanical conveyor during operation of the internal combustion engine is circulated.

Aus der DE 32 15 642 A1 ist ein Start/Stop-System für Brennkraftmaschinen bekannt, bei dem die automatische Abschaltung der Brennkraftmaschine an verschiedene Fahrzeugparameter geknüpft ist. Treten einzelne dieser Fahrzeugparameter, beispielsweise das Über- beziehungsweise Unterschreiten einer Kühlmitteltemperatur, eingeschaltete Frontscheibenwerfer, Nebelscheinwerfer, Scheibenwischeranlage oder Klimaanlage, auf, wird die automatische Start/Stop-Funktion aufgehoben.From DE 32 15 642 A1 discloses a start / stop system for internal combustion engines is known, in the automatic shutdown of the engine to different Vehicle parameters is linked. If any of these vehicle parameters occur, For example, the exceeding or falling below a coolant temperature, switched front windscreen lighters, fog lights, windscreen wiper system or Air conditioning, on, the automatic start / stop function is canceled.

Der Erfindung liegt die Aufgabe zugrunde, eine Heizungsanlage der gattungsgemäßen Art zu schaffen, bei der in einfacher Weise ohne zusätzliche Bauelemente eine kontinuierliche Beheizung eines Innenraumes des Fahrzeuges möglich ist.The invention is based on the object, a heating system of the generic type Art to create, in a simple way without additional components one continuous heating of an interior of the vehicle is possible.

Erfindungsgemäß wird diese Aufgabe durch eine Heizungsanlage mit den im Anspruch 1 genannten Merkmalen gelöst. Dadurch, daß der automatische Start/Stop-Modus der Brennkraftmaschine in Abhängigkeit einer Heizleistungsanforderung für den Innenraum des Fahrzeuges abschaltbar ist, ist vorteilhaft möglich, eine kontinuierliche Beheizung des Innenraumes in jeder Betriebssituation aufrechtzuerhalten. Durch die Abschaltung des automatischen Start/Stop-Modus wird bei einem kurzfristigen verkehrsbedingten Anhalten des Fahrzeuges, beispielsweise beim Ampelstop, verhindert, daß ein Einbruch einer Ausblastemperatur bei vorliegender Heizleistungsanforderung erfolgt. Insbesondere ist bevorzugt, wenn das Abschalten des automatischen Start/Stop-Modus der Brennkraftmaschine ab einer vorgebbaren Mindest-Heizleistungsanforderung, vorzugsweise ab 30 % bis 95 % einer maximalen Heizleistungsanforderung, erfolgt. Je nach verwendeten Schalter kann der eingestellte Wert etwas toleranzbehaftet sein. This object is achieved by a heating system with the in claim 1 solved mentioned features. The fact that the automatic start / stop mode of the Internal combustion engine as a function of a heating power requirement for the interior of the vehicle is switched off, is advantageously possible, a continuous heating of the interior in any operating situation. By the shutdown the automatic start / stop mode is at a short-term traffic Stopping the vehicle, for example at the traffic light stop, prevents a burglary an exhaust temperature at the present Heizleistungsanforderung done. In particular, it is preferred if switching off the automatic start / stop mode the internal combustion engine from a predetermined minimum heating power requirement, preferably from 30% to 95% of a maximum heating power requirement occurs. ever according to the switch used, the set value can be somewhat tolerant.

Hierdurch wird sichergestellt, daß bei geringer Heizleistungsanforderung, bei der in der Regel nur eine relativ geringe Ausblastemperatur notwendig ist, ein kurzfristiges Abschalten der Brennkraftmaschine während eines Ampelstops oder dergleichen, nicht zu einem nennenswerten, durch Fahrzeuginsassen spürbaren Abfall der Ausblastemperatur führt. Erst bei größeren Heizleistungsanforderungen, bei denen Schwankungen, insbesondere ein Abfallen der Ausblastemperatur, zu spürbaren Komforteinbußen für die Fahrzeuginsassen führt, wird der automatische Start/Stop-Betrieb der Brennkraftmaschine unterbrochen. Außerdem kann die Heizung mit einem elektrischen Zusatzheizelement, z. B. ein PTC, gekoppelt sein. Ein solches Heizelement kann für eine bestimmte Zeit (insb. < 1 min) bei abgeschalteten Motor eine gewisse Wärmeversorgung (ggf. gedrosselt) sicherstellen; vorteilhaft wird ein solches Heizelement (ggf. nach der vorgegebenen Zeitspanne) ebenfalls mit dem Motor abgeschaltet, ein erfindungsgemäß erfolgender Motordurchlauf wird entsprechend gleichzeitig zur Erzeugung der notwendigen elektrischen Energie für das elektrische Zuheizsystem genutzt. Das elektrische Zuheizsystem wird vorteilhaft bei einer niedrigen Mindest-Heizleistungsabforderung (insb. < 50 %) zugeschaltet und insbesondere in Abhängigkeit der Kühlwassertemperatur (keine Zuschaltung bei hoher Kühlwassertemperatur).This ensures that at low heating power requirement, in the Usually only a relatively low blow-out temperature is necessary, a short-term Turning off the engine during a traffic light stop or the like, not to a significant, noticeable by vehicle occupants drop in the Outlet temperature leads. Only for larger heating power requirements, in which Fluctuations, in particular a drop in the discharge temperature, to be felt Loss of comfort for the vehicle occupants, is the automatic start / stop operation the internal combustion engine interrupted. In addition, the heater with a electric auxiliary heating element, z. As a PTC, coupled. Such a heating element can for a certain time (esp. <1 min) with the engine off a certain Ensure heat supply (throttled if necessary); advantageous is such Heating element (if necessary after the specified period) also with the engine switched off, an inventively successful engine run is accordingly at the same time to generate the necessary electrical energy for the electrical Zuheizsystem used. The electric Zuheizsystem is advantageous at a low Minimum heating power demand (in particular <50%) switched on and in particular in Dependence of the cooling water temperature (no connection at high Cooling water temperature).

Weitere bevorzugte Ausgestaltungen der Erfindung ergeben sich aus den übrigen, in den Unteransprüchen genannten Merkmalen.Further preferred embodiments of the invention will become apparent from the others, in the Subclaims mentioned features.

Die Erfindung wird nachfolgend in einem Ausführungsbeispiel anhand der zugehörigen Zeichnung, die ein Blockschaltbild einer Heizungsanlage für den Innenraum eines Fahrzeuges zeigt, näher erläutert.The invention will be described below in an embodiment with reference to the associated Drawing showing a block diagram of a heating system for the interior of a Vehicle shows, explained in more detail.

Die Figur zeigt ein Blockschaltbild einer insgesamt mit 10 bezeichneten Heizungsanlage eines Fahrzeuges. Die Heizungsanlage 10 umfaßt ein Heizgerät 12, durch das ein Kanalsystem 14 zum Transport von Luft führt. Das Kanalsystem 14 besitzt an seinem stromabwärtigen Ende 16 wenigstens einen - nicht dargestellten - Lufteinlaß zum Zuführen von Frischluft 18 und an seinem stromaufwärtigen Ende 20 wenigstens einen Luftauslaß, der in einen Innenraum eines Fahrzeuges mündet. Das Kanalsystem 14 ist verzweigt ausgeführt und mündet üblicherweise in einer Vielzahl von Luftauslässen, beispielsweise in einer Instrumententafel, im Fußraum, im Türbereich oder dergleichen des Fahrzeuges. Die Frischluft 18 wird entweder als Außenluft, von außerhalb des Fahrzeuges, oder als Innenluft, aus einem Innenraum des Fahrzeuges (Umluftbetrieb), angesaugt. Zum Aufrechterhalten einer Luftströmung ist in das Kanalsystem 14 eine hier nicht dargestellte Strömungsmaschine integriert. Zum wahlweisen Aufheizen der Frischluft 18 wird diese durch das Heizgerät 12 geführt, so daß eine hier lediglich schematisch angedeutete Heizluft 22 dem Innenraum des Fahrzeuges zuführbar ist.The figure shows a block diagram of a total of 10 designated heating system of a vehicle. The heating system 10 includes a heater 12 through which a Channel system 14 leads to the transport of air. The channel system 14 has at its downstream end 16 at least one - not shown - air inlet to Supplying fresh air 18 and at its upstream end 20 at least one Air outlet, which opens into an interior of a vehicle. The channel system 14 is Branched executed and usually flows in a variety of air outlets, for example, in an instrument panel, in the footwell, in the door area or the like of the vehicle. The fresh air 18 is either outside air, from outside the Vehicle, or as indoor air, from an interior of the vehicle (recirculation mode), sucked. To maintain an air flow is in the channel system 14 a here not shown turbomachine integrated. For optional heating of the Fresh air 18, this is performed by the heater 12 so that one here only schematically indicated heating air 22 is fed to the interior of the vehicle.

Das Fahrzeug besitzt eine Brennkraftmaschine 24, die flüssigkeitsgekühlt ist. Hierzu ist ein Kühlkreislauf 26 vorgesehen, in den die Brennkraftmaschine 24, ein Kühler 28 sowie eine mechanisch antreibbare Fördereinrichtung 30 integriert sind. Femer ist ein Ausgleichsbehälter 32 vorgesehen, der eine temperaturbedingte Volumenänderung eines, durch den Kühlkreislauf 26 strömenden Kühlmittels, beispielsweise Wasser, ausgleicht.The vehicle has an internal combustion engine 24 which is liquid cooled. This is a cooling circuit 26 is provided, in which the internal combustion engine 24, a radiator 28 and a mechanically driven conveyor 30 are integrated. Femer is one Equalization tank 32 is provided, which is a temperature-related volume change a, through the cooling circuit 26 flowing coolant, for example water, balances.

Der Kühlkreislauf 26 ist mit einem Heizkreislauf 34 gekoppelt. Hierbei führt ein Vorlauf 36 zu einem Wärmetauscher 38, von dem ein Rücklauf 40 zum Kühlkreislauf 26 führt. Durch die Kopplung des Heizkreislaufes 34 mit dem Kühlkreislauf 26 zirkuliert durch diesen ebenfalls das Kühlmittel mit einer entsprechenden Kühlmitteltemperatur. In der Figur 1 ist der Heizkreislauf 34 zu dem Kühlkreislauf 26 parallel geschaltet. Nach weiteren, nicht dargestellten Ausführungsbeispielen können der Heizkreislauf 34 und der Kühlkreislauf 26 auch in Reihe geschaltet sein.The cooling circuit 26 is coupled to a heating circuit 34. This leads a lead 36 to a heat exchanger 38, from which a return line 40 leads to the cooling circuit 26. By the coupling of the heating circuit 34 with the cooling circuit 26 circulates through it also the coolant with a corresponding coolant temperature. In the figure 1 is the heating circuit 34 connected in parallel to the cooling circuit 26. After another, not illustrated embodiments, the heating circuit 34 and the cooling circuit 26 also be connected in series.

Der Wärmetauscher 38 ist über eine Temperaturmischklappe 42 mit dem Kanalsystem 14 verbindbar. Die Temperaturmischklappe 42 ist über einen Stellantrieb 44, der beispielsweise von einem Schrittmotor gebildet ist, betätigbar. Über eine hier angedeutete mechanische Verbindung 46 ist der Stellantrieb 44 mit der Temperaturmischklappe 42 gekoppelt.The heat exchanger 38 is connected via a temperature mixing flap 42 with the channel system 14 connectable. The temperature mixing flap 42 is connected via an actuator 44, the for example, is formed by a stepper motor, operable. About one here indicated mechanical connection 46 is the actuator 44 with the Temperature mixing flap 42 coupled.

Der Heizungsanlage 10 ist ein Heizungssteuergerät 48 zugeordnet, das ein Stellmittel 50 umfaßt, dessen Stellung der Heizleistungsanforderung für den Innenraum des Fahrzeuges entspricht. Das Heizungssteuergerät 48 ist über eine Steuerleitung 52 mit dem Stellantrieb 44 verbunden.The heating system 10 is associated with a heating control unit 48, which has an actuating means 50 whose position of the heating power requirement for the interior of the Vehicle corresponds. The heater control unit 48 is connected via a control line 52 the actuator 44 connected.

Das Fahrzeug umfaßt femer ein Motorsteuergerät 54, das über eine hier angedeutete Steuerleitung 56 mit der Brennkraftmaschine 24 verbunden ist. Darüber hinaus ist ein Getriebesteuergerät 58 vorgesehen, daß der Ansteuerung eines nicht dargestellten Automatik-Getriebes des Fahrzeuges dient. Sämtliche Steuergeräte des Fahrzeuges, von denen in Figur 1 das Heizungssteuergerät 48, das Motorsteuergerät 54 und das Getriebesteuergerät 58 dargestellt sind, sind mit einem Fahrzeugbus 60 verbunden. Der Fahrzeugbus 60 ist beispielsweise ein CAN-Bus. Aufbau und Funktion eines derartigen Fahrzeugbusses sind allgemein bekannt und sollen im Rahmen der vorliegenden Beschreibung nicht näher erläutert werden. Der Fahrzeugbus 60 dient dem Austausch von Befehlen und/oder Informationen zwischen passiven und aktiven Komponenten innerhalb des Fahrzeuges.The vehicle further comprises an engine control unit 54, which via a here indicated Control line 56 is connected to the internal combustion engine 24. In addition, one is Transmission control unit 58 is provided that the control of a not shown Automatic transmission of the vehicle is used. All control units of the vehicle, of which in Figure 1, the heater control unit 48, the engine control unit 54 and the Transmission control unit 58 are shown connected to a vehicle bus 60. Of the Vehicle bus 60 is, for example, a CAN bus. Structure and function of such Vehicle buses are well known and are intended in the context of the present Description will not be explained in detail. The vehicle bus 60 is for replacement of commands and / or information between passive and active components inside the vehicle.

Die in der Figur dargestellte Heizungsanlage 10 zeigt folgende Funktion:The heating system 10 shown in the figure has the following function:

Beim Betrieb der Brennkraftmaschine 24 erfolgt über die Fördereinrichtung 30 eine Umwälzung des Kühlmittels innerhalb des Kühlkreislaufes 26 und - durch die Parallelschaltung oder Reihenschaltung - im Heizkreislauf 34. Das Kühlmittel besitzt hierbei eine, gegebenenfalls über eine nicht dargestellte Steuereinrichtung einstellbare Soll-Kühlmitteltemperatur. Durch den Wärmetauscher 38 kann dem Kühlmittel eine Wärmemenge entzogen werden und diese der Frischluft 18 zugeführt werden. Diese Wärmemenge wird durch eine Öffnungsstellung der Temperaturmischklappe 42 beeinflußt. Entsprechend der Stellung der Temperaturmischklappe 42 wird eine mehr oder weniger große Menge der Frischluft 18 über den Wärmetauscher 38 geführt, so daß eine Ausblastemperatur TA der Heizluft 22 in den Innenraum des Fahrzeuges einstellbar ist. Der Öffnungsgrad der Temperaturmischklappe 42 ist abhängig von einer Heizleistungsanforderung für den Innenraum des Fahrzeuges. Die Heizleistungsanforderung kann durch eine automatische Temperaturregelung für den Innenraum des Fahrzeuges und/oder einen Fahrzeugführer ausgelöst werden. Entsprechend dieser Heizleistungsanforderung wird die Temperaturmischklappe 42 über den Stellantrieb 44 geöffnet beziehungsweise geschlossen, so daß ein freier Strömungsquerschnitt des Kanalsystems 14 derart variiert wird, daß der Anteil der über den Wärmetauscher 38 geführten Frischluft 18 mit höherer Heizleistungsanforderung ansteigt beziehungsweise mit sinkender Heizleistungsanforderung abnimmt. Die Ansteuerung des Stellantriebes 44 erfolgt entsprechend der Stellung des Stellmittels 50 des Heizungssteuergerätes 48.During operation of the internal combustion engine 24 takes place via the conveyor 30, a circulation of the coolant within the cooling circuit 26 and - by the parallel connection or series connection - in the heating circuit 34. The coolant here has a, optionally via a control device, not shown, target coolant temperature. Through the heat exchanger 38, a quantity of heat can be withdrawn from the coolant and these are supplied to the fresh air 18. This amount of heat is influenced by an opening position of the temperature mixing flap 42. According to the position of the temperature mixing flap 42, a more or less large amount of fresh air 18 is passed through the heat exchanger 38, so that a blow-out temperature T A of the heating air 22 is adjustable in the interior of the vehicle. The opening degree of the temperature mixing door 42 is dependent on a heating power requirement for the interior of the vehicle. The heating power requirement can be triggered by an automatic temperature control for the interior of the vehicle and / or a driver. In accordance with this heating power requirement, the temperature mixing flap 42 is opened or closed via the actuator 44, so that a free flow cross section of the channel system 14 is varied such that the proportion of guided through the heat exchanger 38 fresh air 18 increases with higher heating power requirement or decreases with decreasing heating power requirement. The control of the actuator 44 is carried out according to the position of the actuating means 50 of the heater control unit 48th

Die Heizleistungsanforderung, die zwischen 0 und 100 % liegen kann, wird vom Heizungssteuergerät 48 gleichzeitig als Information in den Fahrzeugbus 60 eingespeist und ist somit von weiteren, am Fahrzeugbus 60 gekoppelten Komponenten des Fahrzeuges abrufbar.The heating requirement, which can be between 0 and 100%, is calculated by the Heating controller 48 simultaneously fed as information in the vehicle bus 60 and is thus of other, coupled to the vehicle bus 60 components of Vehicle available.

Die Brennkraftmaschine 24 ist in einem Start/Stop-Modus betreibbar, das heißt, bei einem verkehrsbedingten Halt, beispielsweise einem Ampelstop, wird über das Getriebesteuergerät 58 dem Motorsteuergerät 54 mitgeteilt, daß eine Abschaltung der Brennkraftmaschine 24 erfolgen soll. Über das Motorsteuergerät 54 wird beispielsweise die Zündung, Einspritzung oder dergleichen für die Brennkraftmaschine 24 gesteuert. Im Rahmen der vorliegenden Beschreibung soll auf die Wirkungsweise des Start/Stop-Modus der Brennkraftmaschine 24 nicht näher eingegangen werden.The internal combustion engine 24 is operable in a start / stop mode, that is, at a traffic-related stop, for example, a traffic light stop is on the Transmission control unit 58 the engine control unit 54 informed that a shutdown of the Internal combustion engine 24 should take place. For example, via the engine control unit 54 Ignition, injection or the like for the internal combustion engine 24 controlled. in the The scope of the present description is intended to indicate the mode of operation of the start / stop mode the internal combustion engine 24 will not be discussed in more detail.

Über das Getriebesteuergerät 58 und/oder das Motorsteuergerät 54, die ebenfalls an dem Fahrzeugbus 60 angeschlossen sind, wird das von dem Heizungssteuergerät 48 in den Fahrzeugbus 60 eingespeiste Informationssignal über die bestehende Heizleistungsanforderung ständig abgerufen. Übersteigt diese Heizleistungsanforderung einen vorgebbaren Wert, der beispielsweise bei 30 % liegt, wird durch das Getriebesteuergerät 58 und/oder das Motorsteuergerät 54 die automatische Start/Stop-Betriebsweise der Brennkraftmaschine 24 ausgeschaltet, so daß diese auch bei einem verkehrsbedingten Halt, beispielsweise einem Ampelstop, nicht abschaltet. Hierdurch wird erreicht, daß durch den Betrieb der Brennkraftmaschine 24 das Kühlmittel im Kühlkreislauf 26 und somit im Heizkreislauf 34 auf der Soll-Kühlmitteltemperatur gehalten wird. Somit ist sichergestellt, daß für den Wärmetauscher 38 eine genügend große Wärmeenergie zur Verfügung steht, die ein der gewünschten Heizleistungsanforderung entsprechendes Aufheizen der Heizluft 22 sicherstellt.Via the transmission control unit 58 and / or the engine control unit 54, which also at are connected to the vehicle bus 60, that of the heating control unit 48 in the vehicle bus 60 fed information signal on the existing Heating demand constantly retrieved. Exceeds this heating requirement a predeterminable value, for example 30%, is determined by the Transmission control unit 58 and / or the engine control unit 54, the automatic start / stop mode the internal combustion engine 24 turned off, so that they also at a traffic-related stop, for example, a traffic light stop, does not switch off. hereby is achieved that by the operation of the internal combustion engine 24, the coolant in the Cooling circuit 26 and thus held in the heating circuit 34 at the desired coolant temperature becomes. Thus, it is ensured that for the heat exchanger 38 is a sufficiently large Heat energy is available, which is one of the desired heating power requirement ensures appropriate heating of the heating air 22.

Nach weiteren Ausführungsbeispielen kann das Getriebesteuergerät 58 beziehungsweise das Motorsteuergerät 54 die Information über den Grad der Heizleistungsanforderung direkt vom Heizungssteuergerät 48 bekommen. Dies kann in Fahrzeugen der Fall sein, die entweder keinen Fahrzeugbus 60 besitzen, oder die Heizleistungsanforderung für keine weitere an dem Fahrzeugbus 60 angeschlossene Komponente von Interesse ist.According to further embodiments, the transmission control unit 58 or the engine control unit 54, the information about the degree of Heating requirement received directly from the heating control unit 48. This can be done in Be vehicles that either have no vehicle bus 60, or the case Heating power requirement for no further connected to the vehicle bus 60 Component of interest.

Femer kann nach einem weiteren Ausführungsbeispiel vorgesehen sein, daß der Grad der Heizleistungsanforderung dem Getriebesteuergerät 58 beziehungsweise dem Motorsteuergerät 54 über die Temperaturmischklappe 42 mitgeteilt wird. Ein Öffnungsgrad der Temperaturmischklappe 42 ist über eine Kurvenfunktion direkt an die Heizleistungsanforderung für den Innenraum des Fahrzeuges gekoppelt. Durch die Ansteuerung über den als Stellmotor ausgebildeten Stellantrieb 44 ist jeder Öffnungsstellung der Temperaturmischklappe 42 eine exakte Heizleistungsanforderung zuordbar. Somit kann das Ansteuersignal für den Stellantrieb 44 gleichzeitig als Informationssignal für das Getriebesteuergerät 58 beziehungsweise das Motorsteuergerät 54 verwendet werden, wenn eine vorgebbare Heizleistungsanforderung, beispielsweise von über 30 %, gegeben ist.Furthermore, it can be provided according to a further embodiment that the degree the heating power requirement the transmission control unit 58 and the Engine control unit 54 is communicated via the temperature mixing valve 42. One Opening degree of the temperature mixing door 42 is directly connected to the. Via a curve function Heating power requirement for the interior of the vehicle coupled. By the Control over the actuator 44 designed as a servomotor is everyone Opening position of the temperature mixing door 42 an exact heating power requirement assignable. Thus, the drive signal for the actuator 44 can simultaneously as Information signal for the transmission control unit 58 or the Engine control unit 54 can be used if a predefinable Heating power requirement, for example, of over 30%, is given.

Claims (8)

  1. Heating installation for the interior of a vehicle which can be driven via a liquid-cooled internal combustion engine capable of being operated in an automatic start/stop mode, a cooling circuit (26) for the internal combustion engine having for a coolant a conveying device capable of being driven mechanically by the internal combustion engine, the cooling circuit being connected to a heating circuit (34), the heating circuit having arranged in it a heating appliance which discharges heat energy to an air volume flow as a function of a heating power requirement, and the air volume flow being conducted via a duct system (14) to at least one outlet into the interior of the vehicle, characterized in that the automatic start/stop mode of the internal combustion engine (24) can be switched off as a function of the heating power requirement.
  2. Heating installation according to Claim 1, characterized in that the switch-off of the automatic start/stop mode of the internal combustion engine (24) takes place as from a predeterminable minimum heating power requirement.
  3. Heating installation according to Claim 2, characterized in that the minimum heating power requirement amounts to 30%.
  4. Heating installation according to Claim 2, characterized in that the minimum heating power requirement is predetermined in the range of 30%-95%.
  5. Heating installation according to one of the preceding claims, characterized in that the heating power requirement can be communicated to a transmission control unit (58) and/or engine control unit (54) in order to switch off the start/stop mode of the internal combustion engine (24).
  6. Heating installation according to Claim 5, characterized in that the heating power requirement is communicated by means of a heating control unit (48).
  7. Heating installation according to Claim 5, characterized in that the heating power requirement is communicated by means of the opening position of a temperature mixing flap (42) of the heating appliance (12).
  8. Heating installation according to one of the preceding claims, characterized in that the heating power requirement is fed as information into a vehicle bus (60) and is evaluated via the vehicle bus (60) by the transmission control unit (58) and/or engine control unit (54).
EP99122012A 1998-11-24 1999-11-11 Heating device for the interior of a vehicle Expired - Lifetime EP1004768B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19854119 1998-11-24
DE19854119A DE19854119A1 (en) 1998-11-24 1998-11-24 Heating installation for cabin of vehicle with liquid-cooled internal combustion engine operable in automatic start-stop mode has automatic start-stop mode switched off for high heat demand
DE19935236 1999-07-28
DE19935236 1999-07-28

Publications (3)

Publication Number Publication Date
EP1004768A2 EP1004768A2 (en) 2000-05-31
EP1004768A3 EP1004768A3 (en) 2000-09-27
EP1004768B1 true EP1004768B1 (en) 2004-05-12

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ID=26050331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99122012A Expired - Lifetime EP1004768B1 (en) 1998-11-24 1999-11-11 Heating device for the interior of a vehicle

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EP (1) EP1004768B1 (en)
JP (1) JP2000203248A (en)
AT (1) ATE266810T1 (en)
DE (1) DE59909464D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2905308A1 (en) * 2006-08-30 2008-03-07 Peugeot Citroen Automobiles Sa AIR CONDITIONING SYSTEM FOR A MOTOR VEHICLE
JP6217289B2 (en) * 2013-10-02 2017-10-25 株式会社デンソー Hybrid vehicle control device
EP2942256A1 (en) * 2014-05-08 2015-11-11 Vossloh Kiepe Ges.m.b.H. Device for heating the seating compartment and/or operatorýs platform of railway vehicles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5818535A (en) * 1981-07-27 1983-02-03 Toyota Motor Corp Automatically stopping and starting device of engine
JPS6444317A (en) * 1987-08-12 1989-02-16 Diesel Kiki Co Vehicle heating device
US5317998A (en) * 1993-09-01 1994-06-07 Thermo King Corporation Method of monitoring a truck engine and for controlling the temperature of a truck sleeper unit

Also Published As

Publication number Publication date
EP1004768A3 (en) 2000-09-27
EP1004768A2 (en) 2000-05-31
ATE266810T1 (en) 2004-05-15
DE59909464D1 (en) 2004-06-17
JP2000203248A (en) 2000-07-25

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